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<a href="qsystem_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/******************************************************************************</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment"> * qLibc</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> *</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> * Copyright (c) 2010-2015 Seungyoung Kim.</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> * All rights reserved.</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> *</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> * Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"> * modification, are permitted provided that the following conditions are met:</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"> *</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment"> * 1. Redistributions of source code must retain the above copyright notice,</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"> *    this list of conditions and the following disclaimer.</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright notice,</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment"> *    this list of conditions and the following disclaimer in the documentation</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment"> *    and/or other materials provided with the distribution.</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment"> *</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS &quot;AS IS&quot;</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment"> * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment"> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="comment"> * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="comment"> * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="comment"> * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span><span class="comment"> * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="comment"> * POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span><span class="comment"></span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span><span class="comment">/**</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="comment"> * @file qsystem.c System APIs.</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="comment"> */</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span> </div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="preprocessor">#include &lt;stdlib.h&gt;</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="preprocessor">#include &lt;stdbool.h&gt;</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="preprocessor">#include &lt;unistd.h&gt;</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span><span class="preprocessor">#include &lt;netdb.h&gt;</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span><span class="preprocessor">#include &lt;sys/socket.h&gt;</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span><span class="preprocessor">#include &lt;netinet/in.h&gt;</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span><span class="preprocessor">#include &lt;arpa/inet.h&gt;</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span><span class="preprocessor">#include &quot;qinternal.h&quot;</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span><span class="preprocessor">#include &quot;utilities/qfile.h&quot;</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span><span class="preprocessor">#include &quot;utilities/qsystem.h&quot;</span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span><span class="comment"></span> </div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span><span class="comment">/**</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span><span class="comment"> * Get system environment variable</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span><span class="comment"> *</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span><span class="comment"> * @param envname   environment name</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="comment"> * @param defstr    if not found, return this string</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><span class="comment"> *</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span><span class="comment"> * @return a pointer of environment variable</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span><span class="comment"> */</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"><a class="line" href="qsystem_8c.html#a3913af5fdd1ab50b75601d112a965988">   54</a></span><span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code hl_function" href="qsystem_8c.html#a3913af5fdd1ab50b75601d112a965988">qgetenv</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *envname, <span class="keyword">const</span> <span class="keywordtype">char</span> *defstr) {</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span>    <span class="keyword">const</span> <span class="keywordtype">char</span> *envstr = getenv(envname);</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span>    <span class="keywordflow">return</span> (envstr) ? envstr : defstr;</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>}</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span><span class="comment"></span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span><span class="comment">/**</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span><span class="comment"> * Get the result string of external command execution</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span><span class="comment"> *</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span><span class="comment"> * @param cmd       external command</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span><span class="comment"> *</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span><span class="comment"> * @return malloced string pointer which contains result if successful,</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span><span class="comment"> *         otherwise returns NULL</span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span><span class="comment"> *</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span><span class="comment"> * @note</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span><span class="comment"> *  If the command does not report result but it is executed successfully,</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span><span class="comment"> *  this will returns empty string(not null)</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span><span class="comment"> */</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"><a class="line" href="qsystem_8c.html#a739f64aa9825fe23965b11d71b0674f5">   71</a></span><span class="keywordtype">char</span> *<a class="code hl_function" href="qsystem_8c.html#a739f64aa9825fe23965b11d71b0674f5">qsyscmd</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code hl_function" href="qhttpclient_8c.html#a1f90b08bc44bdf06a60dae398d7ee297">cmd</a>) {</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>    FILE *fp = popen(<a class="code hl_function" href="qhttpclient_8c.html#a1f90b08bc44bdf06a60dae398d7ee297">cmd</a>, <span class="stringliteral">&quot;r&quot;</span>);</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>    <span class="keywordflow">if</span> (fp == NULL)</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>        <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span>    <span class="keywordtype">char</span> *str = <a class="code hl_function" href="qfile_8c.html#a9133efad385ea27ea68c6df8fb94f1c4">qfile_read</a>(fp, NULL);</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>    pclose(fp);</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span> </div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span>    <span class="keywordflow">if</span> (str == NULL)</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span>        str = strdup(<span class="stringliteral">&quot;&quot;</span>);</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>    <span class="keywordflow">return</span> str;</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>}</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span> </div>
<div class="ttc" id="aqfile_8c_html_a9133efad385ea27ea68c6df8fb94f1c4"><div class="ttname"><a href="qfile_8c.html#a9133efad385ea27ea68c6df8fb94f1c4">qfile_read</a></div><div class="ttdeci">void * qfile_read(FILE *fp, size_t *nbytes)</div><div class="ttdoc">Read data from a file stream.</div><div class="ttdef"><b>Definition</b> <a href="qfile_8c_source.html#l00214">qfile.c:214</a></div></div>
<div class="ttc" id="aqhttpclient_8c_html_a1f90b08bc44bdf06a60dae398d7ee297"><div class="ttname"><a href="qhttpclient_8c.html#a1f90b08bc44bdf06a60dae398d7ee297">cmd</a></div><div class="ttdeci">static void * cmd(qhttpclient_t *client, const char *method, const char *uri, void *data, size_t size, int *rescode, size_t *contentslength, qlisttbl_t *reqheaders, qlisttbl_t *resheaders)</div><div class="ttdoc">qhttpclient-&gt;cmd(): Sends a custom request(method) to the remote host and reads it's response.</div><div class="ttdef"><b>Definition</b> <a href="qhttpclient_8c_source.html#l01099">qhttpclient.c:1099</a></div></div>
<div class="ttc" id="aqsystem_8c_html_a3913af5fdd1ab50b75601d112a965988"><div class="ttname"><a href="qsystem_8c.html#a3913af5fdd1ab50b75601d112a965988">qgetenv</a></div><div class="ttdeci">const char * qgetenv(const char *envname, const char *defstr)</div><div class="ttdoc">Get system environment variable.</div><div class="ttdef"><b>Definition</b> <a href="qsystem_8c_source.html#l00054">qsystem.c:54</a></div></div>
<div class="ttc" id="aqsystem_8c_html_a739f64aa9825fe23965b11d71b0674f5"><div class="ttname"><a href="qsystem_8c.html#a739f64aa9825fe23965b11d71b0674f5">qsyscmd</a></div><div class="ttdeci">char * qsyscmd(const char *cmd)</div><div class="ttdoc">Get the result string of external command execution.</div><div class="ttdef"><b>Definition</b> <a href="qsystem_8c_source.html#l00071">qsystem.c:71</a></div></div>
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